Infrared beacon positioning system
US6216087A · kind A · utility
34Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2201/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A physical positioning system for a portable computing device equipped with an infrared receiver includes a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage. The light source has an attached voltage converter to provide a reduced supplied voltage. An infrared beacon is powered at the reduced supplied voltage through an electrical connection to the voltage converter. The infrared beacon broadcasts a data signal representative of a physical location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.